Autothermal reforming of simulated and commercial diesel: The performance of zirconia-supported RhPt catalyst in the presence of sulfur

Abstract Simulated and commercial low-sulfur diesel fuels (S  In ATR of the simulated fuels, the catalysts deactivated markedly in the presence of H2S, whereas in ATR of simulated fuels in the presence of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and in ATR of commercial diesel the catalyst deactivated only slightly over several hours. In view of its different effect, H2S cannot be considered a suitable model compound for heterocyclic sulfur compounds present in commercial low-sulfur fuels. In ATR of commercial low-sulfur diesel, carbon formation increased with the Pt loading, whereas sulfur deposition on the catalyst was strongest on the monometallic Rh/ZrO2. Furthermore, less carbon was deposited on the RhPt catalyst in the presence than absence of H2S, as sulfur blocked the catalyst active sites. The catalyst could be reactivated by stopping the H2S flow.

[1]  Detlef Stolten,et al.  Small-scale testing of a precious metal catalyst in the autothermal reforming of various hydrocarbon feeds , 2002 .

[2]  H. Yasuda,et al.  Confirmation of sulfur tolerance of bimetallic Pd–Pt supported on highly acidic USY zeolite by EXAFS , 1998 .

[3]  Takashi Suzuki,et al.  Steam reforming of kerosene on Ru/Al2O3 catalyst to yield hydrogen , 2000 .

[4]  A. Krause,et al.  Autothermal reforming of simulated gasoline and diesel fuels , 2006 .

[5]  Lanny D. Schmidt,et al.  Effect of sulfur in catalytic partial oxidation of methane over Rh–Ce coated foam monoliths , 2008 .

[6]  A. Krause,et al.  Autothermal reforming of n-dodecane, toluene, and their mixture on mono- and bimetallic noble metal zirconia catalysts , 2007 .

[7]  Caine M. Finnerty,et al.  REFORMING CATALYSTS FOR HYDROGEN GENERATION IN FUEL CELL APPLICATIONS , 2006 .

[8]  J. Lercher,et al.  Mono and bifunctional pathways of CO2/CH4 reforming over Pt and Rh based catalysts , 1998 .

[9]  Chunshan Song,et al.  Low-temperature steam reforming of jet fuel in the absence and presence of sulfur over Rh and Rh–Ni catalysts for fuel cells , 2006 .

[10]  David L. Trimm,et al.  ONBOARD FUEL CONVERSION FOR HYDROGEN-FUEL-CELL-DRIVEN VEHICLES , 2001 .

[11]  Andrew G. Glen,et al.  APPL , 2001 .

[12]  Tsutomu Yamaguchi.  Application of ZrO2 as a catalyst and a catalyst support , 1994 .

[13]  K. Kino,et al.  Biodesulfurization of Naphthothiophene and Benzothiophene through Selective Cleavage of Carbon-Sulfur Bonds by Rhodococcus sp. Strain WU-K2R , 2002, Applied and Environmental Microbiology.

[14]  L. F. Brown.  A comparative study of fuels for on-board hydrogen production for fuel-cell-powered automobiles , 2001 .

[15]  Rutger A. van Santen,et al.  A Periodic DFT Study of the Isomerization of Thiophenic Derivatives Catalyzed by Acidic Mordenite , 2002 .

[16]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[17]  J. Bae,et al.  Autothermal reforming study of diesel for fuel cell application , 2006 .

[18]  David L. Trimm,et al.  Coke formation and minimisation during steam reforming reactions , 1997 .

[19]  S. K. Bej,et al.  Search for an Efficient 4,6-DMDBT Hydrodesulfurization Catalyst: A Review of Recent Studies , 2004 .

[20]  R. Reimert,et al.  Noble metal catalysts supported on gadolinium doped ceria used for natural gas reforming in fuel cell applications , 2007 .

[21]  Shudong Wang,et al.  Autothermal reforming of gasoline on Rh-based monolithic catalysts , 2007 .

[22]  T. Yamaguchi,et al.  Acid-base bifunctional catalysis by ZrO2 and its mixed oxides , 1994 .

[23]  Jens R. Rostrup-Nielsen,et al.  SULFUR-PASSIVATED NICKEL CATALYSTS FOR CARBON-FREE STEAM REFORMING OF METHANE , 1984 .